two skateboarders of mass 50 kg and 60 kg push each other with force 70N. what is the acceleration of each skaters. step by step.

The electric field between square plates of a parallel-plate capacitor has magnitude e. the potential across the plates is maintained with constant voltage by a battery as they are pulled apart to twice their original separation, which is small compared to the dimensions of the plates. the magnitude of the electric field between the plates is now equal to a)e b)e/4 c)e/2 d)4e e)2e

What is the coefficient of kinetic friction μk between the block and the tabletop?

Which bonds are found inside a water molecule